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Preparation method of high-purity titanium diboride ceramic powder

A technology of titanium diboride and ceramic powder, which is applied in the field of preparation of high-purity titanium diboride ceramic powder, can solve the problems of being unsuitable for industrial production, reducing production efficiency, and long reaction time, and achieves short reaction time and improved production. The effect of high efficiency and activity

Pending Publication Date: 2022-08-09
ZIBO SHENGTAI COMPOSITE MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will inevitably lead to longer reaction time and lower production efficiency
Therefore, this method is not suitable for industrial production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The specific preparation process of this example is as follows:

[0029] 1) Titanium dioxide, boron sources (quality ratio ratio: boric acid = 2: 3) with reducing agent (quality ratio: magnesium powder = 2: 2.5) according to 8: 7: 12.6 to add a mixture tank, add ingredients, add ingredients The ball ratio 1: 5 mix, 4 gas replacement after sealing, the mixing time is controlled at 3h, and the mixed raw material is obtained after mixing;

[0030] 2) After the mixed raw material is pressed at the pressure of 12MPa, placed in the self -spread reaction furnace. Before ignition, first three times of sturgeon replacement. When the pressure gauge is displayed as 0, connect the circuit to ignite, and use it in the self -spread reaction furnace. The part of the electric heating wire heating mixed raw materials caused a self -spread reaction, and the reaction temperature was controlled at 430 ° C. After the reaction stops the cooling, the boron vintage titanium crude products are obta...

Embodiment 2

[0034] The specific preparation process of this example is as follows:

[0035] 1) Titanium dioxide, boron sources (quality ratio ratio: boric acid = 2: 7) with reducing agent (quality ratio: magnesium powder = 2: 7) according to 8: 8: 13.2 The quality ratio is added to the mixing can, and the material is added. The ball ratio 1: 5 mix, 4 gas replacement after sealing, the mixing time is controlled at 2h, and the mixed raw material is obtained after mixing;

[0036] 2) After pressing the mixed raw material at 8MPa pressure, place it in the self -spread reaction furnace. Before ignition, first three times of radon replacement. When the pressure gauge is displayed as 0, connect the circuit to ignite, and use it in the self -spread reaction furnace. The part of the electric heating wire heating mixed raw materials caused a self -spread reaction, and the reaction temperature was controlled at 500 ° C. After the reaction stops the cooling, the boron vintage titanium crude products are ...

Embodiment 3

[0040] The specific preparation process of this example is as follows:

[0041] 1) Titanium dioxide, boron sources (quality ratio ratio: boric acid = 7: 2) with reducing agent (quality ratio: magnesium powder = 7: 2) according to 8: 7: 13.5 to add a mixing can, add ingredients, add ingredients The ball ratio 1: 5 mix, 5 gas replacement after sealing, the mixing time is controlled at 4h, and the mixed raw material is obtained after mixing;

[0042] 2) After pressing the mixed raw material under 26MPa pressure, place it in the self -spread reaction furnace. Before ignition, first three times of radon replacement is performed. When the pressure gauge is displayed as 0, connect the circuit to ignite, and use it in the self -spread reaction furnace. The part of the electric heating wire heating mixed raw materials caused a self -spread reaction, and the reaction temperature was controlled at 410 ° C. After the reaction stops the cooling, the boron vintage titanium crude products are ob...

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Abstract

The invention discloses a preparation method of high-purity titanium diboride ceramic powder, and belongs to the technical field of preparation of novel ceramic materials. The preparation method is characterized by comprising the following steps: 1) uniformly mixing titanium dioxide, a boron source and a reducing agent according to a mass ratio of 8: (6-9): (11-15) to obtain a mixed raw material; the reducing agent is a composition of one or two of calcium powder and magnesium powder in any proportion; (2) the mixed raw materials are loaded into a self-propagating reaction furnace, a self-propagating reaction is initiated under argon protection, a titanium diboride crude product is obtained, and the reaction temperature is controlled to range from 400 DEG C to 700 DEG C; and (3) the titanium diboride crude product is subjected to acid leaching, washing and drying, and titanium diboride powder is obtained. The method is short in technological process and low in production cost, and the prepared titanium diboride ceramic powder is high in purity, narrow in particle size distribution, high in activity and easy to sinter.

Description

Technical field [0001] A preparation method of high -purity diexin titanium ceramic powder belongs to the field of new ceramic materials preparation technology. Background technique [0002] Titanium titanium has excellent physical and chemical characteristics such as high melting point, high hardness, strong abrasion resistance, and stable chemical properties. It is widely used in high -temperature structure special ceramics, refractory materials, electronic electronic materials, functional materials, aerospace materials and other fields. Titanium porridge has been used as additives, metal tadpoles, nuclear fuels, inertic electrodes, and thermocouple protective suits such as various materials. In these applications, the performance indicators of diexin titanium powder and the performance of downstream products determined by product quality. Therefore, preparation of high -performance diexin titanium ceramic powder is the key. [0003] At present, there are many preparation metho...

Claims

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Application Information

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IPC IPC(8): C01B35/04C04B35/58C04B35/626
CPCC01B35/04C04B35/6267C04B35/62675C04B35/58071C01P2006/80C01P2004/61C01P2004/51
Inventor 石丽丽张健傅迪王朝傅禄
Owner ZIBO SHENGTAI COMPOSITE MATERIAL TECH
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